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vpncloud
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More benchmarking

This commit is contained in:
Dennis Schwerdel 2021-02-08 17:30:58 +01:00
parent 38c3ba1177
commit 2955a80af4
15 changed files with 948 additions and 766 deletions
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77
benches/.code.rs Normal file
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@ -0,0 +1,77 @@
#[macro_use]
mod util {
include!("../src/util.rs");
}
mod error {
include!("../src/error.rs");
}
mod payload {
include!("../src/payload.rs");
}
mod types {
include!("../src/types.rs");
}
mod table {
include!("../src/table.rs");
}
mod cloud {
include!("../src/cloud.rs");
}
mod config {
include!("../src/config.rs");
}
mod device {
include!("../src/device.rs");
}
mod net {
include!("../src/net.rs");
}
mod beacon {
include!("../src/beacon.rs");
}
mod messages {
include!("../src/messages.rs");
}
mod port_forwarding {
include!("../src/port_forwarding.rs");
}
mod traffic {
include!("../src/traffic.rs");
}
mod poll {
pub mod epoll{
include!("../src/poll/epoll.rs");
}
#[cfg(any(target_os = "linux", target_os = "android"))]
pub use self::epoll::EpollWait as WaitImpl;
use std::io;
pub enum WaitResult {
Timeout,
Socket,
Device,
Error(io::Error)
}
}
mod crypto {
pub mod core {
include!("../src/crypto/core.rs");
}
pub mod init {
include!("../src/crypto/init.rs");
}
pub mod rotate {
include!("../src/crypto/rotate.rs");
}
pub mod common {
include!("../src/crypto/common.rs");
}
pub use common::*;
pub use self::core::{EXTRA_LEN, TAG_LEN};
}
mod tests {
pub mod common {
include!("../src/tests/common.rs");
}
}

95
benches/criterion.rs
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@ -10,31 +10,17 @@ use ring::aead;
use std::str::FromStr;
use std::net::{SocketAddr, Ipv4Addr, SocketAddrV4, UdpSocket};
mod util {
include!("../src/util.rs");
}
mod error {
include!("../src/error.rs");
}
mod payload {
include!("../src/payload.rs");
}
mod types {
include!("../src/types.rs");
}
mod table {
include!("../src/table.rs");
}
mod crypto_core {
include!("../src/crypto/core.rs");
}
include!(".code.rs");
pub use error::Error;
use util::{MockTimeSource, MsgBuffer};
use types::{Address, Range};
use table::{ClaimTable};
use device::Type;
use config::Config;
use payload::{Packet, Frame, Protocol};
use crypto_core::{create_dummy_pair, EXTRA_LEN};
use crypto::core::{create_dummy_pair, EXTRA_LEN};
use tests::common::{TunSimulator, TapSimulator};
fn udp_send(c: &mut Criterion) {
let sock = UdpSocket::bind("127.0.0.1:0").unwrap();
@ -145,5 +131,74 @@ fn crypto_aes256(c: &mut Criterion) {
crypto_bench(c, &aead::AES_256_GCM)
}
criterion_group!(benches, udp_send, decode_ipv4, decode_ipv6, decode_ethernet, decode_ethernet_with_vlan, lookup_cold, lookup_warm, crypto_chacha20, crypto_aes128, crypto_aes256);
fn full_communication_tun_router(c: &mut Criterion) {
log::set_max_level(log::LevelFilter::Error);
let config1 = Config {
device_type: Type::Tun,
auto_claim: false,
claims: vec!["1.1.1.1/32".to_string()],
..Config::default()
};
let config2 = Config {
device_type: Type::Tun,
auto_claim: false,
claims: vec!["2.2.2.2/32".to_string()],
..Config::default()
};
let mut sim = TunSimulator::new();
let node1 = sim.add_node(false, &config1);
let node2 = sim.add_node(false, &config2);
sim.connect(node1, node2);
sim.simulate_all_messages();
assert!(sim.is_connected(node1, node2));
assert!(sim.is_connected(node2, node1));
let mut payload = vec![0x40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2];
payload.append(&mut vec![0; 1400]);
let mut g = c.benchmark_group("full_communication");
g.throughput(Throughput::Bytes(2*1400));
g.bench_function("tun_router", |b| {
b.iter(|| {
sim.put_payload(node1, payload.clone());
sim.simulate_all_messages();
assert_eq!(Some(&payload), sim.pop_payload(node2).as_ref());
});
});
g.finish()
}
fn full_communication_tap_switch(c: &mut Criterion) {
log::set_max_level(log::LevelFilter::Error);
let config = Config { device_type: Type::Tap, ..Config::default() };
let mut sim = TapSimulator::new();
let node1 = sim.add_node(false, &config);
let node2 = sim.add_node(false, &config);
sim.connect(node1, node2);
sim.simulate_all_messages();
assert!(sim.is_connected(node1, node2));
assert!(sim.is_connected(node2, node1));
let mut payload = vec![2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5];
payload.append(&mut vec![0; 1400]);
let mut g = c.benchmark_group("full_communication");
g.throughput(Throughput::Bytes(2*1400));
g.bench_function("tap_switch", |b| {
b.iter(|| {
sim.put_payload(node1, payload.clone());
sim.simulate_all_messages();
assert_eq!(Some(&payload), sim.pop_payload(node2).as_ref());
});
});
g.finish()
}
criterion_group!(benches,
udp_send,
decode_ipv4, decode_ipv6, decode_ethernet, decode_ethernet_with_vlan,
lookup_cold, lookup_warm,
crypto_chacha20, crypto_aes128, crypto_aes256,
full_communication_tun_router, full_communication_tap_switch
);
criterion_main!(benches);

85
benches/valgrind.rs
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@ -10,31 +10,17 @@ use ring::aead;
use std::str::FromStr;
use std::net::{SocketAddr, Ipv4Addr, SocketAddrV4, UdpSocket};
mod util {
include!("../src/util.rs");
}
mod error {
include!("../src/error.rs");
}
mod payload {
include!("../src/payload.rs");
}
mod types {
include!("../src/types.rs");
}
mod table {
include!("../src/table.rs");
}
mod crypto_core {
include!("../src/crypto/core.rs");
}
include!(".code.rs");
pub use error::Error;
use util::{MockTimeSource, MsgBuffer};
use config::Config;
use types::{Address, Range};
use device::Type;
use table::{ClaimTable};
use payload::{Packet, Frame, Protocol};
use crypto_core::{create_dummy_pair, EXTRA_LEN};
use crypto::core::{create_dummy_pair, EXTRA_LEN};
use tests::common::{TunSimulator, TapSimulator};
fn udp_send() {
let sock = UdpSocket::bind("127.0.0.1:0").unwrap();
@ -107,4 +93,63 @@ fn crypto_aes256() {
crypto_bench(&aead::AES_256_GCM)
}
iai::main!(udp_send, decode_ipv4, decode_ipv6, decode_ethernet, decode_ethernet_with_vlan, lookup_cold, lookup_warm, crypto_chacha20, crypto_aes128, crypto_aes256);
fn full_communication_tun_router() {
log::set_max_level(log::LevelFilter::Error);
let config1 = Config {
device_type: Type::Tun,
auto_claim: false,
claims: vec!["1.1.1.1/32".to_string()],
..Config::default()
};
let config2 = Config {
device_type: Type::Tun,
auto_claim: false,
claims: vec!["2.2.2.2/32".to_string()],
..Config::default()
};
let mut sim = TunSimulator::new();
let node1 = sim.add_node(false, &config1);
let node2 = sim.add_node(false, &config2);
sim.connect(node1, node2);
sim.simulate_all_messages();
assert!(sim.is_connected(node1, node2));
assert!(sim.is_connected(node2, node1));
let mut payload = vec![0x40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2];
payload.append(&mut vec![0; 1400]);
for _ in 0..1000 {
sim.put_payload(node1, payload.clone());
sim.simulate_all_messages();
assert_eq!(Some(&payload), black_box(sim.pop_payload(node2).as_ref()));
}
}
fn full_communication_tap_switch() {
log::set_max_level(log::LevelFilter::Error);
let config = Config { device_type: Type::Tap, ..Config::default() };
let mut sim = TapSimulator::new();
let node1 = sim.add_node(false, &config);
let node2 = sim.add_node(false, &config);
sim.connect(node1, node2);
sim.simulate_all_messages();
assert!(sim.is_connected(node1, node2));
assert!(sim.is_connected(node2, node1));
let mut payload = vec![2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5];
payload.append(&mut vec![0; 1400]);
for _ in 0..1000 {
sim.put_payload(node1, payload.clone());
sim.simulate_all_messages();
assert_eq!(Some(&payload), black_box(sim.pop_payload(node2).as_ref()));
}
}
iai::main!(
udp_send,
decode_ipv4, decode_ipv6, decode_ethernet, decode_ethernet_with_vlan,
lookup_cold, lookup_warm,
crypto_chacha20, crypto_aes128, crypto_aes256,
full_communication_tun_router, full_communication_tap_switch
);

498
src/crypto/common.rs Normal file
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@ -0,0 +1,498 @@
use super::{
core::{test_speed, CryptoCore},
init::{self, InitResult, InitState, CLOSING},
rotate::RotationState
};
use crate::{
error::Error,
types::NodeId,
util::{from_base62, to_base62, MsgBuffer}
};
use ring::{
aead::{self, Algorithm, LessSafeKey, UnboundKey},
agreement::{EphemeralPrivateKey, UnparsedPublicKey},
pbkdf2,
rand::{SecureRandom, SystemRandom},
signature::{Ed25519KeyPair, KeyPair, ED25519_PUBLIC_KEY_LEN}
};
use smallvec::{smallvec, SmallVec};
use std::{fmt::Debug, io::Read, num::NonZeroU32, sync::Arc, time::Duration};
const SALT: &[u8; 32] = b"vpncloudVPNCLOUDvpncl0udVpnCloud";
const INIT_MESSAGE_FIRST_BYTE: u8 = 0xff;
const MESSAGE_TYPE_ROTATION: u8 = 0x10;
pub type Ed25519PublicKey = [u8; ED25519_PUBLIC_KEY_LEN];
pub type EcdhPublicKey = UnparsedPublicKey<SmallVec<[u8; 96]>>;
pub type EcdhPrivateKey = EphemeralPrivateKey;
pub type Key = SmallVec<[u8; 32]>;
const DEFAULT_ALGORITHMS: [&str; 3] = ["AES128", "AES256", "CHACHA20"];
#[cfg(test)]
const SPEED_TEST_TIME: f32 = 0.02;
#[cfg(not(test))]
const SPEED_TEST_TIME: f32 = 0.1;
const ROTATE_INTERVAL: usize = 120;
pub trait Payload: Debug + PartialEq + Sized {
fn write_to(&self, buffer: &mut MsgBuffer);
fn read_from<R: Read>(r: R) -> Result<Self, Error>;
}
#[derive(Clone)]
pub struct Algorithms {
pub algorithm_speeds: SmallVec<[(&'static Algorithm, f32); 3]>,
pub allow_unencrypted: bool
}
#[derive(Debug, Default, Deserialize, Serialize, Clone, PartialEq)]
#[serde(rename_all = "kebab-case", deny_unknown_fields, default)]
pub struct Config {
pub password: Option<String>,
pub private_key: Option<String>,
pub public_key: Option<String>,
pub trusted_keys: Vec<String>,
pub algorithms: Vec<String>
}
pub struct Crypto {
node_id: NodeId,
key_pair: Arc<Ed25519KeyPair>,
trusted_keys: Arc<[Ed25519PublicKey]>,
algorithms: Algorithms
}
impl Crypto {
pub fn new(node_id: NodeId, config: &Config) -> Result<Self, Error> {
let key_pair = if let Some(priv_key) = &config.private_key {
if let Some(pub_key) = &config.public_key {
Self::parse_keypair(priv_key, pub_key)?
} else {
Self::parse_private_key(priv_key)?
}
} else if let Some(password) = &config.password {
Self::keypair_from_password(password)
} else {
return Err(Error::InvalidConfig("Either private_key or password must be set"))
};
let mut trusted_keys = vec![];
for tn in &config.trusted_keys {
trusted_keys.push(Self::parse_public_key(tn)?);
}
if trusted_keys.is_empty() {
info!("Trusted keys not set, trusting only own public key");
let mut key = [0; ED25519_PUBLIC_KEY_LEN];
key.clone_from_slice(key_pair.public_key().as_ref());
trusted_keys.push(key);
}
let mut algos = Algorithms { algorithm_speeds: smallvec![], allow_unencrypted: false };
let algorithms = config.algorithms.iter().map(|a| a as &str).collect::<Vec<_>>();
let allowed = if algorithms.is_empty() { &DEFAULT_ALGORITHMS } else { &algorithms as &[&str] };
let duration = Duration::from_secs_f32(SPEED_TEST_TIME);
let mut speeds = Vec::new();
for name in allowed {
let algo = match &name.to_uppercase() as &str {
"UNENCRYPTED" | "NONE" | "PLAIN" => {
algos.allow_unencrypted = true;
warn!("Crypto settings allow unencrypted connections");
continue
}
"AES128" | "AES128_GCM" | "AES_128" | "AES_128_GCM" => &aead::AES_128_GCM,
"AES256" | "AES256_GCM" | "AES_256" | "AES_256_GCM" => &aead::AES_256_GCM,
"CHACHA" | "CHACHA20" | "CHACHA20_POLY1305" => &aead::CHACHA20_POLY1305,
_ => return Err(Error::InvalidConfig("Unknown crypto method"))
};
let speed = test_speed(algo, &duration);
algos.algorithm_speeds.push((algo, speed as f32));
speeds.push((name, speed as f32));
}
if !speeds.is_empty() {
info!(
"Crypto speeds: {}",
speeds.into_iter().map(|(a, s)| format!("{}: {:.1} MiB/s", a, s)).collect::<Vec<_>>().join(", ")
);
}
Ok(Self {
node_id,
key_pair: Arc::new(key_pair),
trusted_keys: trusted_keys.into_boxed_slice().into(),
algorithms: algos
})
}
pub fn generate_keypair(password: Option<&str>) -> (String, String) {
let mut bytes = [0; 32];
match password {
None => {
let rng = SystemRandom::new();
rng.fill(&mut bytes).unwrap();
}
Some(password) => {
pbkdf2::derive(
pbkdf2::PBKDF2_HMAC_SHA256,
NonZeroU32::new(4096).unwrap(),
SALT,
password.as_bytes(),
&mut bytes
);
}
}
let keypair = Ed25519KeyPair::from_seed_unchecked(&bytes).unwrap();
let privkey = to_base62(&bytes);
let pubkey = to_base62(keypair.public_key().as_ref());
(privkey, pubkey)
}
fn keypair_from_password(password: &str) -> Ed25519KeyPair {
let mut key = [0; 32];
pbkdf2::derive(pbkdf2::PBKDF2_HMAC_SHA256, NonZeroU32::new(4096).unwrap(), SALT, password.as_bytes(), &mut key);
Ed25519KeyPair::from_seed_unchecked(&key).unwrap()
}
fn parse_keypair(privkey: &str, pubkey: &str) -> Result<Ed25519KeyPair, Error> {
let privkey = from_base62(privkey).map_err(|_| Error::InvalidConfig("Failed to parse private key"))?;
let pubkey = from_base62(pubkey).map_err(|_| Error::InvalidConfig("Failed to parse public key"))?;
let keypair = Ed25519KeyPair::from_seed_and_public_key(&privkey, &pubkey)
.map_err(|_| Error::InvalidConfig("Keys rejected by crypto library"))?;
Ok(keypair)
}
fn parse_private_key(privkey: &str) -> Result<Ed25519KeyPair, Error> {
let privkey = from_base62(privkey).map_err(|_| Error::InvalidConfig("Failed to parse private key"))?;
let keypair = Ed25519KeyPair::from_seed_unchecked(&privkey)
.map_err(|_| Error::InvalidConfig("Key rejected by crypto library"))?;
Ok(keypair)
}
fn parse_public_key(pubkey: &str) -> Result<Ed25519PublicKey, Error> {
let pubkey = from_base62(pubkey).map_err(|_| Error::InvalidConfig("Failed to parse public key"))?;
if pubkey.len() != ED25519_PUBLIC_KEY_LEN {
return Err(Error::InvalidConfig("Failed to parse public key"))
}
let mut result = [0; ED25519_PUBLIC_KEY_LEN];
result.clone_from_slice(&pubkey);
Ok(result)
}
pub fn peer_instance<P: Payload>(&self, payload: P) -> PeerCrypto<P> {
PeerCrypto::new(
self.node_id,
payload,
self.key_pair.clone(),
self.trusted_keys.clone(),
self.algorithms.clone()
)
}
}
#[derive(Debug, PartialEq)]
pub enum MessageResult<P: Payload> {
Message(u8),
Initialized(P),
InitializedWithReply(P),
Reply,
None
}
pub struct PeerCrypto<P: Payload> {
#[allow(dead_code)]
node_id: NodeId,
init: Option<InitState<P>>,
rotation: Option<RotationState>,
unencrypted: bool,
core: Option<CryptoCore>,
rotate_counter: usize
}
impl<P: Payload> PeerCrypto<P> {
pub fn new(
node_id: NodeId, init_payload: P, key_pair: Arc<Ed25519KeyPair>, trusted_keys: Arc<[Ed25519PublicKey]>,
algorithms: Algorithms
) -> Self
{
Self {
node_id,
init: Some(InitState::new(node_id, init_payload, key_pair, trusted_keys, algorithms)),
rotation: None,
unencrypted: false,
core: None,
rotate_counter: 0
}
}
fn get_init(&mut self) -> Result<&mut InitState<P>, Error> {
if let Some(init) = &mut self.init {
Ok(init)
} else {
Err(Error::InvalidCryptoState("Initialization already finished"))
}
}
fn get_core(&mut self) -> Result<&mut CryptoCore, Error> {
if let Some(core) = &mut self.core {
Ok(core)
} else {
Err(Error::InvalidCryptoState("Crypto core not ready yet"))
}
}
fn get_rotation(&mut self) -> Result<&mut RotationState, Error> {
if let Some(rotation) = &mut self.rotation {
Ok(rotation)
} else {
Err(Error::InvalidCryptoState("Key rotation not initialized"))
}
}
pub fn initialize(&mut self, out: &mut MsgBuffer) -> Result<(), Error> {
let init = self.get_init()?;
if init.stage() != init::STAGE_PING {
Err(Error::InvalidCryptoState("Initialization already ongoing"))
} else {
init.send_ping(out);
out.prepend_byte(INIT_MESSAGE_FIRST_BYTE);
Ok(())
}
}
pub fn has_init(&self) -> bool {
self.init.is_some()
}
pub fn is_ready(&self) -> bool {
self.core.is_some()
}
pub fn algorithm_name(&self) -> &'static str {
if let Some(ref core) = self.core {
let algo = core.algorithm();
if algo == &aead::CHACHA20_POLY1305 {
"CHACHA20"
} else if algo == &aead::AES_128_GCM {
"AES128"
} else if algo == &aead::AES_256_GCM {
"AES256"
} else {
unreachable!()
}
} else {
"PLAIN"
}
}
fn handle_init_message(&mut self, buffer: &mut MsgBuffer) -> Result<MessageResult<P>, Error> {
let result = self.get_init()?.handle_init(buffer)?;
if !buffer.is_empty() {
buffer.prepend_byte(INIT_MESSAGE_FIRST_BYTE);
}
match result {
InitResult::Continue => Ok(MessageResult::Reply),
InitResult::Success { peer_payload, is_initiator } => {
self.core = self.get_init()?.take_core();
if self.core.is_none() {
self.unencrypted = true;
}
if self.get_init()?.stage() == init::CLOSING {
self.init = None
}
if self.core.is_some() {
self.rotation = Some(RotationState::new(!is_initiator, buffer));
}
if !is_initiator {
if self.unencrypted {
return Ok(MessageResult::Initialized(peer_payload))
}
assert!(!buffer.is_empty());
buffer.prepend_byte(MESSAGE_TYPE_ROTATION);
self.encrypt_message(buffer)?;
}
Ok(MessageResult::InitializedWithReply(peer_payload))
}
}
}
fn handle_rotate_message(&mut self, data: &[u8]) -> Result<(), Error> {
if self.unencrypted {
return Ok(())
}
if let Some(rot) = self.get_rotation()?.handle_message(data)? {
let core = self.get_core()?;
let algo = core.algorithm();
let key = LessSafeKey::new(UnboundKey::new(algo, &rot.key[..algo.key_len()]).unwrap());
core.rotate_key(key, rot.id, rot.use_for_sending);
}
Ok(())
}
fn encrypt_message(&mut self, buffer: &mut MsgBuffer) -> Result<(), Error> {
if self.unencrypted {
return Ok(())
}
self.get_core()?.encrypt(buffer);
Ok(())
}
fn decrypt_message(&mut self, buffer: &mut MsgBuffer) -> Result<(), Error> {
// HOT PATH
if self.unencrypted {
return Ok(())
}
self.get_core()?.decrypt(buffer)
}
pub fn handle_message(&mut self, buffer: &mut MsgBuffer) -> Result<MessageResult<P>, Error> {
// HOT PATH
if buffer.is_empty() {
return Err(Error::InvalidCryptoState("No message in buffer"))
}
if is_init_message(buffer.buffer()) {
// COLD PATH
debug!("Received init message");
buffer.take_prefix();
self.handle_init_message(buffer)
} else {
// HOT PATH
debug!("Received encrypted message");
self.decrypt_message(buffer)?;
let msg_type = buffer.take_prefix();
if msg_type == MESSAGE_TYPE_ROTATION {
// COLD PATH
debug!("Received rotation message");
self.handle_rotate_message(buffer.buffer())?;
buffer.clear();
Ok(MessageResult::None)
} else {
Ok(MessageResult::Message(msg_type))
}
}
}
pub fn send_message(&mut self, type_: u8, buffer: &mut MsgBuffer) -> Result<(), Error> {
// HOT PATH
assert_ne!(type_, MESSAGE_TYPE_ROTATION);
buffer.prepend_byte(type_);
self.encrypt_message(buffer)
}
pub fn every_second(&mut self, out: &mut MsgBuffer) -> Result<MessageResult<P>, Error> {
out.clear();
if let Some(ref mut core) = self.core {
core.every_second()
}
if let Some(ref mut init) = self.init {
init.every_second(out)?;
}
if self.init.as_ref().map(|i| i.stage()).unwrap_or(CLOSING) == CLOSING {
self.init = None
}
if !out.is_empty() {
out.prepend_byte(INIT_MESSAGE_FIRST_BYTE);
return Ok(MessageResult::Reply)
}
if let Some(ref mut rotate) = self.rotation {
self.rotate_counter += 1;
if self.rotate_counter >= ROTATE_INTERVAL {
self.rotate_counter = 0;
if let Some(rot) = rotate.cycle(out) {
let core = self.get_core()?;
let algo = core.algorithm();
let key = LessSafeKey::new(UnboundKey::new(algo, &rot.key[..algo.key_len()]).unwrap());
core.rotate_key(key, rot.id, rot.use_for_sending);
}
if !out.is_empty() {
out.prepend_byte(MESSAGE_TYPE_ROTATION);
self.encrypt_message(out)?;
return Ok(MessageResult::Reply)
}
}
}
Ok(MessageResult::None)
}
}
pub fn is_init_message(msg: &[u8]) -> bool {
// HOT PATH
!msg.is_empty() && msg[0] == INIT_MESSAGE_FIRST_BYTE
}
#[cfg(test)]
mod tests {
use super::*;
use crate::types::NODE_ID_BYTES;
fn create_node(config: &Config) -> PeerCrypto<Vec<u8>> {
let rng = SystemRandom::new();
let mut node_id = [0; NODE_ID_BYTES];
rng.fill(&mut node_id).unwrap();
let crypto = Crypto::new(node_id, config).unwrap();
crypto.peer_instance(vec![])
}
#[test]
fn normal() {
let config = Config { password: Some("test".to_string()), ..Default::default() };
let mut node1 = create_node(&config);
let mut node2 = create_node(&config);
let mut msg = MsgBuffer::new(16);
node1.initialize(&mut msg).unwrap();
assert!(!msg.is_empty());
debug!("Node1 -> Node2");
let res = node2.handle_message(&mut msg).unwrap();
assert_eq!(res, MessageResult::Reply);
assert!(!msg.is_empty());
debug!("Node1 <- Node2");
let res = node1.handle_message(&mut msg).unwrap();
assert_eq!(res, MessageResult::InitializedWithReply(vec![]));
assert!(!msg.is_empty());
debug!("Node1 -> Node2");
let res = node2.handle_message(&mut msg).unwrap();
assert_eq!(res, MessageResult::InitializedWithReply(vec![]));
assert!(!msg.is_empty());
debug!("Node1 <- Node2");
let res = node1.handle_message(&mut msg).unwrap();
assert_eq!(res, MessageResult::None);
assert!(msg.is_empty());
let mut buffer = MsgBuffer::new(16);
let rng = SystemRandom::new();
buffer.set_length(1000);
rng.fill(buffer.message_mut()).unwrap();
for _ in 0..1000 {
node1.send_message(1, &mut buffer).unwrap();
let res = node2.handle_message(&mut buffer).unwrap();
assert_eq!(res, MessageResult::Message(1));
match node1.every_second(&mut msg).unwrap() {
MessageResult::None => (),
MessageResult::Reply => {
let res = node2.handle_message(&mut msg).unwrap();
assert_eq!(res, MessageResult::None);
}
other => assert_eq!(other, MessageResult::None)
}
match node2.every_second(&mut msg).unwrap() {
MessageResult::None => (),
MessageResult::Reply => {
let res = node1.handle_message(&mut msg).unwrap();
assert_eq!(res, MessageResult::None);
}
other => assert_eq!(other, MessageResult::None)
}
}
}
}

2
src/crypto/core.rs
View File

@ -53,7 +53,7 @@ use std::{
time::{Duration, Instant}
};
use super::{Error, MsgBuffer};
use crate::{error::Error, util::MsgBuffer};
const NONCE_LEN: usize = 12;

7
src/crypto/init.rs
View File

@ -57,9 +57,9 @@
use super::{
core::{CryptoCore, EXTRA_LEN},
Algorithms, EcdhPrivateKey, EcdhPublicKey, Ed25519PublicKey, Error, MsgBuffer, Payload
Algorithms, EcdhPrivateKey, EcdhPublicKey, Ed25519PublicKey, Payload
};
use crate::types::NodeId;
use crate::{error::Error, types::NodeId, util::MsgBuffer};
use byteorder::{NetworkEndian, ReadBytesExt, WriteBytesExt};
use ring::{
aead::{Algorithm, LessSafeKey, UnboundKey, AES_128_GCM, AES_256_GCM, CHACHA20_POLY1305},
@ -404,8 +404,7 @@ impl<P: Payload> InitState<P> {
pub fn new(
node_id: NodeId, payload: P, key_pair: Arc<Ed25519KeyPair>, trusted_keys: Arc<[Ed25519PublicKey]>,
algorithms: Algorithms
) -> Self
{
) -> Self {
let mut hash = [0; SALTED_NODE_ID_HASH_LEN];
let rng = SystemRandom::new();
rng.fill(&mut hash[0..4]).unwrap();

501
src/crypto/mod.rs
View File

@ -2,507 +2,10 @@
// Copyright (C) 2015-2021 Dennis Schwerdel
// This software is licensed under GPL-3 or newer (see LICENSE.md)
mod common;
mod core;
mod init;
mod rotate;
pub use common::*;
pub use self::core::{EXTRA_LEN, TAG_LEN};
use self::{
core::{test_speed, CryptoCore},
init::{InitResult, InitState, CLOSING},
rotate::RotationState
};
use crate::{
error::Error,
types::NodeId,
util::{from_base62, to_base62, MsgBuffer}
};
use ring::{
aead::{self, Algorithm, LessSafeKey, UnboundKey},
agreement::{EphemeralPrivateKey, UnparsedPublicKey},
pbkdf2,
rand::{SecureRandom, SystemRandom},
signature::{Ed25519KeyPair, KeyPair, ED25519_PUBLIC_KEY_LEN}
};
use smallvec::{smallvec, SmallVec};
use std::{fmt::Debug, io::Read, num::NonZeroU32, sync::Arc, time::Duration};
use thiserror::Error;
const SALT: &[u8; 32] = b"vpncloudVPNCLOUDvpncl0udVpnCloud";
const INIT_MESSAGE_FIRST_BYTE: u8 = 0xff;
const MESSAGE_TYPE_ROTATION: u8 = 0x10;
pub type Ed25519PublicKey = [u8; ED25519_PUBLIC_KEY_LEN];
pub type EcdhPublicKey = UnparsedPublicKey<SmallVec<[u8; 96]>>;
pub type EcdhPrivateKey = EphemeralPrivateKey;
pub type Key = SmallVec<[u8; 32]>;
const DEFAULT_ALGORITHMS: [&str; 3] = ["AES128", "AES256", "CHACHA20"];
#[cfg(test)]
const SPEED_TEST_TIME: f32 = 0.02;
#[cfg(not(test))]
const SPEED_TEST_TIME: f32 = 0.1;
const ROTATE_INTERVAL: usize = 120;
pub trait Payload: Debug + PartialEq + Sized {
fn write_to(&self, buffer: &mut MsgBuffer);
fn read_from<R: Read>(r: R) -> Result<Self, Error>;
}
#[derive(Clone)]
pub struct Algorithms {
pub algorithm_speeds: SmallVec<[(&'static Algorithm, f32); 3]>,
pub allow_unencrypted: bool
}
#[derive(Debug, Default, Deserialize, Serialize, Clone, PartialEq)]
#[serde(rename_all = "kebab-case", deny_unknown_fields, default)]
pub struct Config {
pub password: Option<String>,
pub private_key: Option<String>,
pub public_key: Option<String>,
pub trusted_keys: Vec<String>,
pub algorithms: Vec<String>
}
pub struct Crypto {
node_id: NodeId,
key_pair: Arc<Ed25519KeyPair>,
trusted_keys: Arc<[Ed25519PublicKey]>,
algorithms: Algorithms
}
impl Crypto {
pub fn new(node_id: NodeId, config: &Config) -> Result<Self, Error> {
let key_pair = if let Some(priv_key) = &config.private_key {
if let Some(pub_key) = &config.public_key {
Self::parse_keypair(priv_key, pub_key)?
} else {
Self::parse_private_key(priv_key)?
}
} else if let Some(password) = &config.password {
Self::keypair_from_password(password)
} else {
return Err(Error::InvalidConfig("Either private_key or password must be set"))
};
let mut trusted_keys = vec![];
for tn in &config.trusted_keys {
trusted_keys.push(Self::parse_public_key(tn)?);
}
if trusted_keys.is_empty() {
info!("Trusted keys not set, trusting only own public key");
let mut key = [0; ED25519_PUBLIC_KEY_LEN];
key.clone_from_slice(key_pair.public_key().as_ref());
trusted_keys.push(key);
}
let mut algos = Algorithms { algorithm_speeds: smallvec![], allow_unencrypted: false };
let algorithms = config.algorithms.iter().map(|a| a as &str).collect::<Vec<_>>();
let allowed = if algorithms.is_empty() { &DEFAULT_ALGORITHMS } else { &algorithms as &[&str] };
let duration = Duration::from_secs_f32(SPEED_TEST_TIME);
let mut speeds = Vec::new();
for name in allowed {
let algo = match &name.to_uppercase() as &str {
"UNENCRYPTED" | "NONE" | "PLAIN" => {
algos.allow_unencrypted = true;
warn!("Crypto settings allow unencrypted connections");
continue
}
"AES128" | "AES128_GCM" | "AES_128" | "AES_128_GCM" => &aead::AES_128_GCM,
"AES256" | "AES256_GCM" | "AES_256" | "AES_256_GCM" => &aead::AES_256_GCM,
"CHACHA" | "CHACHA20" | "CHACHA20_POLY1305" => &aead::CHACHA20_POLY1305,
_ => return Err(Error::InvalidConfig("Unknown crypto method"))
};
let speed = test_speed(algo, &duration);
algos.algorithm_speeds.push((algo, speed as f32));
speeds.push((name, speed as f32));
}
if !speeds.is_empty() {
info!(
"Crypto speeds: {}",
speeds.into_iter().map(|(a, s)| format!("{}: {:.1} MiB/s", a, s)).collect::<Vec<_>>().join(", ")
);
}
Ok(Self {
node_id,
key_pair: Arc::new(key_pair),
trusted_keys: trusted_keys.into_boxed_slice().into(),
algorithms: algos
})
}
pub fn generate_keypair(password: Option<&str>) -> (String, String) {
let mut bytes = [0; 32];
match password {
None => {
let rng = SystemRandom::new();
rng.fill(&mut bytes).unwrap();
}
Some(password) => {
pbkdf2::derive(
pbkdf2::PBKDF2_HMAC_SHA256,
NonZeroU32::new(4096).unwrap(),
SALT,
password.as_bytes(),
&mut bytes
);
}
}
let keypair = Ed25519KeyPair::from_seed_unchecked(&bytes).unwrap();
let privkey = to_base62(&bytes);
let pubkey = to_base62(keypair.public_key().as_ref());
(privkey, pubkey)
}
fn keypair_from_password(password: &str) -> Ed25519KeyPair {
let mut key = [0; 32];
pbkdf2::derive(pbkdf2::PBKDF2_HMAC_SHA256, NonZeroU32::new(4096).unwrap(), SALT, password.as_bytes(), &mut key);
Ed25519KeyPair::from_seed_unchecked(&key).unwrap()
}
fn parse_keypair(privkey: &str, pubkey: &str) -> Result<Ed25519KeyPair, Error> {
let privkey = from_base62(privkey).map_err(|_| Error::InvalidConfig("Failed to parse private key"))?;
let pubkey = from_base62(pubkey).map_err(|_| Error::InvalidConfig("Failed to parse public key"))?;
let keypair = Ed25519KeyPair::from_seed_and_public_key(&privkey, &pubkey)
.map_err(|_| Error::InvalidConfig("Keys rejected by crypto library"))?;
Ok(keypair)
}
fn parse_private_key(privkey: &str) -> Result<Ed25519KeyPair, Error> {
let privkey = from_base62(privkey).map_err(|_| Error::InvalidConfig("Failed to parse private key"))?;
let keypair = Ed25519KeyPair::from_seed_unchecked(&privkey)
.map_err(|_| Error::InvalidConfig("Key rejected by crypto library"))?;
Ok(keypair)
}
fn parse_public_key(pubkey: &str) -> Result<Ed25519PublicKey, Error> {
let pubkey = from_base62(pubkey).map_err(|_| Error::InvalidConfig("Failed to parse public key"))?;
if pubkey.len() != ED25519_PUBLIC_KEY_LEN {
return Err(Error::InvalidConfig("Failed to parse public key"))
}
let mut result = [0; ED25519_PUBLIC_KEY_LEN];
result.clone_from_slice(&pubkey);
Ok(result)
}
pub fn peer_instance<P: Payload>(&self, payload: P) -> PeerCrypto<P> {
PeerCrypto::new(
self.node_id,
payload,
self.key_pair.clone(),
self.trusted_keys.clone(),
self.algorithms.clone()
)
}
}
#[derive(Debug, PartialEq)]
pub enum MessageResult<P: Payload> {
Message(u8),
Initialized(P),
InitializedWithReply(P),
Reply,
None
}
pub struct PeerCrypto<P: Payload> {
#[allow(dead_code)]
node_id: NodeId,
init: Option<InitState<P>>,
rotation: Option<RotationState>,
unencrypted: bool,
core: Option<CryptoCore>,
rotate_counter: usize
}
impl<P: Payload> PeerCrypto<P> {
pub fn new(
node_id: NodeId, init_payload: P, key_pair: Arc<Ed25519KeyPair>, trusted_keys: Arc<[Ed25519PublicKey]>,
algorithms: Algorithms
) -> Self
{
Self {
node_id,
init: Some(InitState::new(node_id, init_payload, key_pair, trusted_keys, algorithms)),
rotation: None,
unencrypted: false,
core: None,
rotate_counter: 0
}
}
fn get_init(&mut self) -> Result<&mut InitState<P>, Error> {
if let Some(init) = &mut self.init {
Ok(init)
} else {
Err(Error::InvalidCryptoState("Initialization already finished"))
}
}
fn get_core(&mut self) -> Result<&mut CryptoCore, Error> {
if let Some(core) = &mut self.core {
Ok(core)
} else {
Err(Error::InvalidCryptoState("Crypto core not ready yet"))
}
}
fn get_rotation(&mut self) -> Result<&mut RotationState, Error> {
if let Some(rotation) = &mut self.rotation {
Ok(rotation)
} else {
Err(Error::InvalidCryptoState("Key rotation not initialized"))
}
}
pub fn initialize(&mut self, out: &mut MsgBuffer) -> Result<(), Error> {
let init = self.get_init()?;
if init.stage() != init::STAGE_PING {
Err(Error::InvalidCryptoState("Initialization already ongoing"))
} else {
init.send_ping(out);
out.prepend_byte(INIT_MESSAGE_FIRST_BYTE);
Ok(())
}
}
pub fn has_init(&self) -> bool {
self.init.is_some()
}
pub fn is_ready(&self) -> bool {
self.core.is_some()
}
pub fn algorithm_name(&self) -> &'static str {
if let Some(ref core) = self.core {
let algo = core.algorithm();
if algo == &aead::CHACHA20_POLY1305 {
"CHACHA20"
} else if algo == &aead::AES_128_GCM {
"AES128"
} else if algo == &aead::AES_256_GCM {
"AES256"
} else {
unreachable!()
}
} else {
"PLAIN"
}
}
fn handle_init_message(&mut self, buffer: &mut MsgBuffer) -> Result<MessageResult<P>, Error> {
let result = self.get_init()?.handle_init(buffer)?;
if !buffer.is_empty() {
buffer.prepend_byte(INIT_MESSAGE_FIRST_BYTE);
}
match result {
InitResult::Continue => Ok(MessageResult::Reply),
InitResult::Success { peer_payload, is_initiator } => {
self.core = self.get_init()?.take_core();
if self.core.is_none() {
self.unencrypted = true;
}
if self.get_init()?.stage() == init::CLOSING {
self.init = None
}
if self.core.is_some() {
self.rotation = Some(RotationState::new(!is_initiator, buffer));
}
if !is_initiator {
if self.unencrypted {
return Ok(MessageResult::Initialized(peer_payload))
}
assert!(!buffer.is_empty());
buffer.prepend_byte(MESSAGE_TYPE_ROTATION);
self.encrypt_message(buffer)?;
}
Ok(MessageResult::InitializedWithReply(peer_payload))
}
}
}
fn handle_rotate_message(&mut self, data: &[u8]) -> Result<(), Error> {
if self.unencrypted {
return Ok(())
}
if let Some(rot) = self.get_rotation()?.handle_message(data)? {
let core = self.get_core()?;
let algo = core.algorithm();
let key = LessSafeKey::new(UnboundKey::new(algo, &rot.key[..algo.key_len()]).unwrap());
core.rotate_key(key, rot.id, rot.use_for_sending);
}
Ok(())
}
fn encrypt_message(&mut self, buffer: &mut MsgBuffer) -> Result<(), Error> {
if self.unencrypted {
return Ok(())
}
self.get_core()?.encrypt(buffer);
Ok(())
}
fn decrypt_message(&mut self, buffer: &mut MsgBuffer) -> Result<(), Error> {
// HOT PATH
if self.unencrypted {
return Ok(())
}
self.get_core()?.decrypt(buffer)
}
pub fn handle_message(&mut self, buffer: &mut MsgBuffer) -> Result<MessageResult<P>, Error> {
// HOT PATH
if buffer.is_empty() {
return Err(Error::InvalidCryptoState("No message in buffer"))
}
if is_init_message(buffer.buffer()) {
// COLD PATH
debug!("Received init message");
buffer.take_prefix();
self.handle_init_message(buffer)
} else {
// HOT PATH
debug!("Received encrypted message");
self.decrypt_message(buffer)?;
let msg_type = buffer.take_prefix();
if msg_type == MESSAGE_TYPE_ROTATION {
// COLD PATH
debug!("Received rotation message");
self.handle_rotate_message(buffer.buffer())?;
buffer.clear();
Ok(MessageResult::None)
} else {
Ok(MessageResult::Message(msg_type))
}
}
}
pub fn send_message(&mut self, type_: u8, buffer: &mut MsgBuffer) -> Result<(), Error> {
// HOT PATH
assert_ne!(type_, MESSAGE_TYPE_ROTATION);
buffer.prepend_byte(type_);
self.encrypt_message(buffer)
}
pub fn every_second(&mut self, out: &mut MsgBuffer) -> Result<MessageResult<P>, Error> {
out.clear();
if let Some(ref mut core) = self.core {
core.every_second()
}
if let Some(ref mut init) = self.init {
init.every_second(out)?;
}
if self.init.as_ref().map(|i| i.stage()).unwrap_or(CLOSING) == CLOSING {
self.init = None
}
if !out.is_empty() {
out.prepend_byte(INIT_MESSAGE_FIRST_BYTE);
return Ok(MessageResult::Reply)
}
if let Some(ref mut rotate) = self.rotation {
self.rotate_counter += 1;
if self.rotate_counter >= ROTATE_INTERVAL {
self.rotate_counter = 0;
if let Some(rot) = rotate.cycle(out) {
let core = self.get_core()?;
let algo = core.algorithm();
let key = LessSafeKey::new(UnboundKey::new(algo, &rot.key[..algo.key_len()]).unwrap());
core.rotate_key(key, rot.id, rot.use_for_sending);
}
if !out.is_empty() {
out.prepend_byte(MESSAGE_TYPE_ROTATION);
self.encrypt_message(out)?;
return Ok(MessageResult::Reply)
}
}
}
Ok(MessageResult::None)
}
}
pub fn is_init_message(msg: &[u8]) -> bool {
// HOT PATH
!msg.is_empty() && msg[0] == INIT_MESSAGE_FIRST_BYTE
}
#[cfg(test)]
mod tests {
use super::*;
use crate::types::NODE_ID_BYTES;
fn create_node(config: &Config) -> PeerCrypto<Vec<u8>> {
let rng = SystemRandom::new();
let mut node_id = [0; NODE_ID_BYTES];
rng.fill(&mut node_id).unwrap();
let crypto = Crypto::new(node_id, config).unwrap();
crypto.peer_instance(vec![])
}
#[test]
fn normal() {
let config = Config { password: Some("test".to_string()), ..Default::default() };
let mut node1 = create_node(&config);
let mut node2 = create_node(&config);
let mut msg = MsgBuffer::new(16);
node1.initialize(&mut msg).unwrap();
assert!(!msg.is_empty());
debug!("Node1 -> Node2");
let res = node2.handle_message(&mut msg).unwrap();
assert_eq!(res, MessageResult::Reply);
assert!(!msg.is_empty());
debug!("Node1 <- Node2");
let res = node1.handle_message(&mut msg).unwrap();
assert_eq!(res, MessageResult::InitializedWithReply(vec![]));
assert!(!msg.is_empty());
debug!("Node1 -> Node2");
let res = node2.handle_message(&mut msg).unwrap();
assert_eq!(res, MessageResult::InitializedWithReply(vec![]));
assert!(!msg.is_empty());
debug!("Node1 <- Node2");
let res = node1.handle_message(&mut msg).unwrap();
assert_eq!(res, MessageResult::None);
assert!(msg.is_empty());
let mut buffer = MsgBuffer::new(16);
let rng = SystemRandom::new();
buffer.set_length(1000);
rng.fill(buffer.message_mut()).unwrap();
for _ in 0..1000 {
node1.send_message(1, &mut buffer).unwrap();
let res = node2.handle_message(&mut buffer).unwrap();
assert_eq!(res, MessageResult::Message(1));
match node1.every_second(&mut msg).unwrap() {
MessageResult::None => (),
MessageResult::Reply => {
let res = node2.handle_message(&mut msg).unwrap();
assert_eq!(res, MessageResult::None);
}
other => assert_eq!(other, MessageResult::None)
}
match node2.every_second(&mut msg).unwrap() {
MessageResult::None => (),
MessageResult::Reply => {
let res = node1.handle_message(&mut msg).unwrap();
assert_eq!(res, MessageResult::None);
}
other => assert_eq!(other, MessageResult::None)
}
}
}
}

3
src/crypto/rotate.rs
View File

@ -29,7 +29,8 @@
//
// The whole communication is sent via the crypto stream and is therefore encrypted and protected against tampering.
use super::{Error, Key, MsgBuffer};
use super::Key;
use crate::{error::Error, util::MsgBuffer};
use byteorder::{NetworkEndian, ReadBytesExt, WriteBytesExt};
use ring::{
agreement::{agree_ephemeral, EphemeralPrivateKey, UnparsedPublicKey, X25519},

4
src/device.rs
View File

@ -344,7 +344,7 @@ impl Device for MockDevice {
}
fn write(&mut self, buffer: &mut MsgBuffer) -> Result<(), Error> {
self.outbound.push_back(buffer.message().to_owned());
self.outbound.push_back(buffer.message().into());
Ok(())
}
@ -355,7 +355,7 @@ impl Device for MockDevice {
impl Default for MockDevice {
fn default() -> Self {
Self { outbound: VecDeque::new(), inbound: VecDeque::new() }
Self { outbound: VecDeque::with_capacity(10), inbound: VecDeque::with_capacity(10) }
}
}

6
src/net.rs
View File

@ -93,8 +93,8 @@ impl MockSocket {
nat: Self::get_nat(),
nat_peers: HashMap::new(),
address,
outbound: VecDeque::new(),
inbound: VecDeque::new()
outbound: VecDeque::with_capacity(10),
inbound: VecDeque::with_capacity(10)
}
}
@ -149,7 +149,7 @@ impl Socket for MockSocket {
}
fn send(&mut self, data: &[u8], addr: SocketAddr) -> Result<usize, io::Error> {
self.outbound.push_back((addr, data.to_owned()));
self.outbound.push_back((addr, data.into()));
if self.nat {
self.nat_peers.insert(addr, MockTimeSource::now() + 300);
}

214
src/tests/common.rs Normal file
View File

@ -0,0 +1,214 @@
// VpnCloud - Peer-to-Peer VPN
// Copyright (C) 2015-2021 Dennis Schwerdel
// This software is licensed under GPL-3 or newer (see LICENSE.md)
use std::{
collections::{HashMap, VecDeque},
io::Write,
net::SocketAddr,
sync::{
atomic::{AtomicUsize, Ordering},
Once
}
};
pub use crate::{
cloud::GenericCloud,
config::{Config, CryptoConfig},
device::{MockDevice, Type},
net::MockSocket,
payload::{Frame, Packet, Protocol},
types::Range,
util::{MockTimeSource, Time, TimeSource}
};
static INIT_LOGGER: Once = Once::new();
pub fn init_debug_logger() {
INIT_LOGGER.call_once(|| {
log::set_boxed_logger(Box::new(DebugLogger)).unwrap();
log::set_max_level(log::LevelFilter::Debug);
})
}
static CURRENT_NODE: AtomicUsize = AtomicUsize::new(0);
struct DebugLogger;
impl DebugLogger {
pub fn set_node(node: usize) {
CURRENT_NODE.store(node, Ordering::SeqCst);
}
}
impl log::Log for DebugLogger {
#[inline]
fn enabled(&self, metadata: &log::Metadata) -> bool {
log::max_level() > metadata.level()
}
#[inline]
fn log(&self, record: &log::Record) {
if self.enabled(record.metadata()) {
eprintln!("Node {} - {} - {}", CURRENT_NODE.load(Ordering::SeqCst), record.level(), record.args());
}
}
#[inline]
fn flush(&self) {
std::io::stderr().flush().expect("Failed to flush")
}
}
type TestNode<P> = GenericCloud<MockDevice, P, MockSocket, MockTimeSource>;
pub struct Simulator<P: Protocol> {
next_port: u16,
nodes: HashMap<SocketAddr, TestNode<P>>,
messages: VecDeque<(SocketAddr, SocketAddr, Vec<u8>)>
}
pub type TapSimulator = Simulator<Frame>;
#[allow(dead_code)]
pub type TunSimulator = Simulator<Packet>;
impl<P: Protocol> Simulator<P> {
pub fn new() -> Self {
init_debug_logger();
MockTimeSource::set_time(0);
Self { next_port: 1, nodes: HashMap::default(), messages: VecDeque::with_capacity(10) }
}
pub fn add_node(&mut self, nat: bool, config: &Config) -> SocketAddr {
let mut config = config.clone();
MockSocket::set_nat(nat);
config.listen = format!("[::]:{}", self.next_port);
let addr = config.listen.parse::<SocketAddr>().unwrap();
if config.crypto.password.is_none() && config.crypto.private_key.is_none() {
config.crypto.password = Some("test123".to_string())
}
DebugLogger::set_node(self.next_port as usize);
self.next_port += 1;
let node = TestNode::new(&config, MockSocket::new(addr), MockDevice::new(), None, None);
DebugLogger::set_node(0);
self.nodes.insert(addr, node);
addr
}
#[allow(dead_code)]
pub fn get_node(&mut self, addr: SocketAddr) -> &mut TestNode<P> {
let node = self.nodes.get_mut(&addr).unwrap();
DebugLogger::set_node(node.get_num());
node
}
pub fn simulate_next_message(&mut self) {
if let Some((src, dst, data)) = self.messages.pop_front() {
if let Some(node) = self.nodes.get_mut(&dst) {
if node.socket().put_inbound(src, data) {
DebugLogger::set_node(node.get_num());
node.trigger_socket_event();
DebugLogger::set_node(0);
let sock = node.socket();
let src = dst;
while let Some((dst, data)) = sock.pop_outbound() {
self.messages.push_back((src, dst, data));
}
}
} else {
warn!("Message to unknown node {}", dst);
}
}
}
pub fn simulate_all_messages(&mut self) {
while !self.messages.is_empty() {
self.simulate_next_message()
}
}
pub fn trigger_node_housekeep(&mut self, addr: SocketAddr) {
let node = self.nodes.get_mut(&addr).unwrap();
DebugLogger::set_node(node.get_num());
node.trigger_housekeep();
DebugLogger::set_node(0);
let sock = node.socket();
while let Some((dst, data)) = sock.pop_outbound() {
self.messages.push_back((addr, dst, data));
}
}
pub fn trigger_housekeep(&mut self) {
for (src, node) in &mut self.nodes {
DebugLogger::set_node(node.get_num());
node.trigger_housekeep();
DebugLogger::set_node(0);
let sock = node.socket();
while let Some((dst, data)) = sock.pop_outbound() {
self.messages.push_back((*src, dst, data));
}
}
}
pub fn set_time(&mut self, time: Time) {
MockTimeSource::set_time(time);
}
pub fn simulate_time(&mut self, time: Time) {
let mut t = MockTimeSource::now();
while t < time {
t += 1;
self.set_time(t);
self.trigger_housekeep();
self.simulate_all_messages();
}
}
pub fn connect(&mut self, src: SocketAddr, dst: SocketAddr) {
let node = self.nodes.get_mut(&src).unwrap();
DebugLogger::set_node(node.get_num());
node.connect(dst).unwrap();
DebugLogger::set_node(0);
let sock = node.socket();
while let Some((dst, data)) = sock.pop_outbound() {
self.messages.push_back((src, dst, data));
}
}
pub fn is_connected(&self, src: SocketAddr, dst: SocketAddr) -> bool {
self.nodes.get(&src).unwrap().is_connected(&dst)
}
#[allow(dead_code)]
pub fn node_addresses(&self) -> Vec<SocketAddr> {
self.nodes.keys().copied().collect()
}
#[allow(dead_code)]
pub fn message_count(&self) -> usize {
self.messages.len()
}
pub fn put_payload(&mut self, addr: SocketAddr, data: Vec<u8>) {
let node = self.nodes.get_mut(&addr).unwrap();
node.device().put_inbound(data);
DebugLogger::set_node(node.get_num());
node.trigger_device_event();
DebugLogger::set_node(0);
let sock = node.socket();
while let Some((dst, data)) = sock.pop_outbound() {
self.messages.push_back((addr, dst, data));
}
}
pub fn pop_payload(&mut self, node: SocketAddr) -> Option<Vec<u8>> {
self.nodes.get_mut(&node).unwrap().device().pop_outbound()
}
pub fn drop_message(&mut self) {
self.messages.pop_front();
}
}

212
src/tests/mod.rs
View File

@ -2,217 +2,7 @@
// Copyright (C) 2015-2021 Dennis Schwerdel
// This software is licensed under GPL-3 or newer (see LICENSE.md)
mod common;
mod nat;
mod payload;
mod peers;
use std::{
collections::{HashMap, VecDeque},
io::Write,
net::SocketAddr,
sync::{
atomic::{AtomicUsize, Ordering},
Once
}
};
pub use super::{
cloud::GenericCloud,
config::{Config, CryptoConfig},
device::{MockDevice, Type},
net::MockSocket,
payload::{Frame, Packet, Protocol},
types::Range,
util::{MockTimeSource, Time, TimeSource}
};
static INIT_LOGGER: Once = Once::new();
pub fn init_debug_logger() {
INIT_LOGGER.call_once(|| {
log::set_boxed_logger(Box::new(DebugLogger)).unwrap();
log::set_max_level(log::LevelFilter::Debug);
})
}
static CURRENT_NODE: AtomicUsize = AtomicUsize::new(0);
struct DebugLogger;
impl DebugLogger {
pub fn set_node(node: usize) {
CURRENT_NODE.store(node, Ordering::SeqCst);
}
}
impl log::Log for DebugLogger {
#[inline]
fn enabled(&self, _metadata: &log::Metadata) -> bool {
true
}
#[inline]
fn log(&self, record: &log::Record) {
if self.enabled(record.metadata()) {
eprintln!("Node {} - {} - {}", CURRENT_NODE.load(Ordering::SeqCst), record.level(), record.args());
}
}
#[inline]
fn flush(&self) {
std::io::stderr().flush().expect("Failed to flush")
}
}
type TestNode<P> = GenericCloud<MockDevice, P, MockSocket, MockTimeSource>;
pub struct Simulator<P: Protocol> {
next_port: u16,
nodes: HashMap<SocketAddr, TestNode<P>>,
messages: VecDeque<(SocketAddr, SocketAddr, Vec<u8>)>
}
pub type TapSimulator = Simulator<Frame>;
#[allow(dead_code)]
pub type TunSimulator = Simulator<Packet>;
impl<P: Protocol> Simulator<P> {
pub fn new() -> Self {
init_debug_logger();
MockTimeSource::set_time(0);
Self { next_port: 1, nodes: HashMap::default(), messages: VecDeque::default() }
}
pub fn add_node(&mut self, nat: bool, config: &Config) -> SocketAddr {
let mut config = config.clone();
MockSocket::set_nat(nat);
config.listen = format!("[::]:{}", self.next_port);
let addr = config.listen.parse::<SocketAddr>().unwrap();
if config.crypto.password.is_none() && config.crypto.private_key.is_none() {
config.crypto.password = Some("test123".to_string())
}
DebugLogger::set_node(self.next_port as usize);
self.next_port += 1;
let node = TestNode::new(&config, MockSocket::new(addr), MockDevice::new(), None, None);
DebugLogger::set_node(0);
self.nodes.insert(addr, node);
addr
}
#[allow(dead_code)]
pub fn get_node(&mut self, addr: SocketAddr) -> &mut TestNode<P> {
let node = self.nodes.get_mut(&addr).unwrap();
DebugLogger::set_node(node.get_num());
node
}
pub fn simulate_next_message(&mut self) {
if let Some((src, dst, data)) = self.messages.pop_front() {
if let Some(node) = self.nodes.get_mut(&dst) {
if node.socket().put_inbound(src, data) {
DebugLogger::set_node(node.get_num());
node.trigger_socket_event();
DebugLogger::set_node(0);
let sock = node.socket();
let src = dst;
while let Some((dst, data)) = sock.pop_outbound() {
self.messages.push_back((src, dst, data));
}
}
} else {
warn!("Message to unknown node {}", dst);
}
}
}
pub fn simulate_all_messages(&mut self) {
while !self.messages.is_empty() {
self.simulate_next_message()
}
}
pub fn trigger_node_housekeep(&mut self, addr: SocketAddr) {
let node = self.nodes.get_mut(&addr).unwrap();
DebugLogger::set_node(node.get_num());
node.trigger_housekeep();
DebugLogger::set_node(0);
let sock = node.socket();
while let Some((dst, data)) = sock.pop_outbound() {
self.messages.push_back((addr, dst, data));
}
}
pub fn trigger_housekeep(&mut self) {
for (src, node) in &mut self.nodes {
DebugLogger::set_node(node.get_num());
node.trigger_housekeep();
DebugLogger::set_node(0);
let sock = node.socket();
while let Some((dst, data)) = sock.pop_outbound() {
self.messages.push_back((*src, dst, data));
}
}
}
pub fn set_time(&mut self, time: Time) {
MockTimeSource::set_time(time);
}
pub fn simulate_time(&mut self, time: Time) {
let mut t = MockTimeSource::now();
while t < time {
t += 1;
self.set_time(t);
self.trigger_housekeep();
self.simulate_all_messages();
}
}
pub fn connect(&mut self, src: SocketAddr, dst: SocketAddr) {
let node = self.nodes.get_mut(&src).unwrap();
DebugLogger::set_node(node.get_num());
node.connect(dst).unwrap();
DebugLogger::set_node(0);
let sock = node.socket();
while let Some((dst, data)) = sock.pop_outbound() {
self.messages.push_back((src, dst, data));
}
}
pub fn is_connected(&self, src: SocketAddr, dst: SocketAddr) -> bool {
self.nodes.get(&src).unwrap().is_connected(&dst)
}
#[allow(dead_code)]
pub fn node_addresses(&self) -> Vec<SocketAddr> {
self.nodes.keys().copied().collect()
}
#[allow(dead_code)]
pub fn message_count(&self) -> usize {
self.messages.len()
}
pub fn put_payload(&mut self, addr: SocketAddr, data: Vec<u8>) {
let node = self.nodes.get_mut(&addr).unwrap();
node.device().put_inbound(data);
DebugLogger::set_node(node.get_num());
node.trigger_device_event();
DebugLogger::set_node(0);
let sock = node.socket();
while let Some((dst, data)) = sock.pop_outbound() {
self.messages.push_back((addr, dst, data));
}
}
pub fn pop_payload(&mut self, node: SocketAddr) -> Option<Vec<u8>> {
self.nodes.get_mut(&node).unwrap().device().pop_outbound()
}
pub fn drop_message(&mut self) {
self.messages.pop_front();
}
}

2
src/tests/nat.rs
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@ -2,7 +2,7 @@
// Copyright (C) 2015-2021 Dennis Schwerdel
// This software is licensed under GPL-3 or newer (see LICENSE.md)
use super::*;
use super::common::*;
#[test]
fn connect_nat_2_peers() {

2
src/tests/payload.rs
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@ -2,7 +2,7 @@
// Copyright (C) 2015-2021 Dennis Schwerdel
// This software is licensed under GPL-3 or newer (see LICENSE.md)
use super::*;
use super::common::*;
#[test]
fn switch_delivers() {

2
src/tests/peers.rs
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@ -2,7 +2,7 @@
// Copyright (C) 2015-2021 Dennis Schwerdel
// This software is licensed under GPL-3 or newer (see LICENSE.md)
use super::*;
use super::common::*;
#[test]
fn direct_connect() {